Broccoli: Top 16 Health Benefits, How to Use and Side Effects

Broccoli, a cruciferous vegetable, is high in antioxidants and valuable plant components, which provide health advantages such as eye and heart health, illness prevention, and cardiovascular health. It is related to cauliflower, cabbage, kale, and Brussels sprouts. Broccoli contains fiber, vitamin C, K, iron, and potassium. It can be eaten raw or cooked, although moderate steaming offers the best health advantages.

Broccoli, a green vegetable from the cruciferous family, is high in vitamins, minerals, fiber, and antioxidants. It reduces inflammation, regulates blood sugar, and boosts the immune system. Broccoli comes in three varieties: cauliflowers, sprouting broccoli, and purple.

More Resources

This article explains everything you need to know about broccoli.

Nutrition facts

Raw broccoli is a low-calorie food that contains a lot of water, carbs, protein, and fat. It has 35 calories per cup, 2.3g of protein, 5.6g of carbs, 2.2g of fiber, 0.3g of fat, 91% of the Daily Value (DV), 77% of the DV, and 15% of the DV in folate. It also includes potassium, magnesium, iron, and calcium.


Broccoli’s carbohydrates include mostly fiber and sugars, including fructose, glucose, and sucrose, with trace amounts of lactose and maltose. However, the total carb count is minimal, with only 3.4 grams of digestible carbs per cup (90 g).


Fiber is essential for a healthy diet since it promotes gut health, lowers illness risk, and aids in weight loss. Raw broccoli supplies 8% of the DV at 2.2 g per cup, making it low in digestible carbohydrates but high in fiber.

Vitamins and minerals

Broccoli contains various vitamins and minerals, including vitamin C, essential for immune function and skin health. It also includes vitamin K1, necessary for blood clotting and bone health. Folate is especially crucial for pregnant women and is required for healthy tissue growth and cell function. Potassium is vital for controlling blood pressure and preventing heart disease. Manganese, a trace element found in whole grains, legumes, fruits, and vegetables, is also abundant. Iron helps red blood cells transfer oxygen.

Other plant compounds

Broccoli contains a high concentration of antioxidants and plant chemicals, including sulforaphane, which may help prevent cancer. It also has indole-3-carbinol, a vitamin peculiar to cruciferous vegetables: Lutein, zeaxanthin, and beta-carotene found in broccoli help to maintain good vision. Kaempferol, an antioxidant with several health advantages, may help against heart disease, cancer, inflammation, and allergies. Quercetin, an antioxidant, provides various benefits, including decreasing blood pressure in high-risk people.

Health Benefits of Broccoli

1. It may prevent certain cancers.

Cancer is a disease characterized by the fast proliferation of aberrant cells frequently connected to oxidative stress. Cruciferous vegetables, particularly broccoli, are thought to lower the incidence of several malignancies. Cruciferous vegetables contain unique plant components known as isothiocyanates, which reduce oxidative stress, inflammation, and cancer development. 

Sulforaphane, the primary isothiocyanate in broccoli, inhibits cancer growth by lowering oxidative stress. According to research, early broccoli sprouts have 10–10 times more sulforaphane than full-grown heads. Broccoli supplements are available; however, they may not have the same health benefits as fresh broccoli.

2. Potent antioxidants help protect health.

Broccoli has a high antioxidant content, including glucoraphanin and sulforaphane, which may be helpful to human health. Glucoraphanin, when transformed into sulforaphane during digestion, may lower blood sugar, cholesterol, oxidative stress, and the risk of chronic disease. Despite its potential health benefits, additional research is required to determine its significance for people. Broccoli also includes lutein and zeaxanthin, which may help reduce oxidative stress and cellular damage in the eyes. Overall, it contains antioxidants that promote healthy cells and tissues.

3. Bioactive substances help lower inflammation.

Broccoli contains bioactive chemicals that lower inflammation in bodily tissues. In animal and test-tube tests, kaempferol, a flavonoid found in broccoli, has shown remarkable anti-inflammatory capabilities. A tiny trial of tobacco users revealed that consuming broccoli lowered inflammatory markers. However, further research is required to determine how the broccoli diet impacts human inflammation. Overall, broccoli includes various bioactive chemicals that have been found to help reduce inflammation.

4. Eye Health

Lutein and zeaxanthin carotenoids, which are essential for healthy vision and can potentially reduce the risk of age-related macular degeneration, are present in broccoli. Vitamin A deficiency can induce night blindness, which can be restored with increased vitamin A levels. 

Beta-carotene transforms into vitamin A, improving vision in those with a low intake. However, it contains less than 1% of the daily value (DV) for vitamin A and should be consumed with other vitamin A-rich foods.

5. It may prevent certain cancers.

Cruciferous vegetables like broccoli contain bioactive chemicals that may protect cells from chronic diseases. According to studies, eating these veggies may help prevent some types of cancer, such as breast, prostate, gastric/stomach, renal/kidney, and bladder cancer. 

However, the evidence does not support explicit health claims concerning broccoli’s function in cancer treatment or prevention. More research is needed to establish the link between these veggies and cancer prevention.

6. Consuming fiber and antioxidants can aid in regulating blood sugar levels.

Broccoli’s antioxidant concentration may help people with diabetes control their blood sugar levels. A study indicated that eating broccoli sprouts regularly improved insulin resistance in type 2 diabetic patients. Furthermore, an animal study found diabetic rats fed broccoli extract had lower blood sugar and less pancreatic cell damage. Broccoli is also high in fiber, which is linked to decreased blood sugar levels and better diabetes control.

7. Lower cholesterol levels

Cholesterol is essential for several bodily activities, including the production of bile acids, which aid in fat breakdown. Bile acids are produced in the liver, stored in the gallbladder, and reabsorbed into the blood. 

Broccolino compounds bind to bile acids in the intestine, boosting excretion and inhibiting reuse. This results in new bile acids from cholesterol, which may lower cholesterol levels and reduce the risk of heart disease. A 2008 study found that steamed may be more effective in binding bile acid, potentially leading to decreased cholesterol levels. Further investigation is required.

8. It Promotes heart health in many ways.

Research has demonstrated that broccoli can help promote cardiovascular health by reducing “bad” LDL cholesterol and triglycerides, both significant risk factors for heart disease. By consuming a powdered supplement made from broccoli sprouts, you can experience a decrease in your triglyceride and LDL cholesterol levels while also increasing your “good” HDL cholesterol levels. 

The antioxidants found in broccoli may also help reduce heart attack risk. In a study involving mice-fed broccoli sprouts, it was discovered that there was a protective effect against cell death and oxidative stress in heart tissue following cardiac arrest. Finally, incorporating more fiber-rich foods, such as broccoli, has been linked to a lower likelihood of developing heart disease.

9. This helps with digestion and reduces indigestion.

Broccoli, a vegetable high in fiber and antioxidants, has been linked to better bowel function and digestive health. Studies have shown that eating broccoli helps lower colon inflammation and boost gut bacteria. Furthermore, taking broccoli can result in faster feces than the control group. However, further research is required to understand its impact on digestive health properly. Overall, broccoli’s potential benefits are encouraging but warrant further exploration.

10. It promotes brain health and reduces mental decline.

Broccoli’s nutrients and bioactive substances may prevent cognitive decline and promote healthy brain and nerve tissue function. A study of 960 older people discovered that eating one serving of dark green vegetables per day, such as broccoli, may help prevent cognitive impairment linked with aging. 

An animal study found that mice given kaempferol, a chemical found in broccoli, had a lower incidence of brain injury and neural tissue inflammation after a stroke-like event—furthermore, sulforaphane, another bioactive solid component found in broccoli, improved brain function following decreased oxygenation. However, further research is required to confirm this association in humans.

11. May slow aging.

Oxidative damage and decreased metabolic function contribute significantly to the aging process. Dietary quality has a substantial impact on genetic expression and age-related illnesses. Broccolini, a crucial bioactive chemical, may decrease the aging process by enhancing the expression of antioxidant genes. However, further research is needed to determine the cause-and-effect relationship between broccoli consumption and its impact on aging.

More Resources

12. Vitamin C boosts immunity.

The human immune system requires vitamin C to function correctly, and broccoli is a rich source of this vitamin. Consuming 100-200 mg of vitamin C daily is recommended to prevent certain infections. Broccoli, commonly paired with oranges or strawberries, provides 84% of the required daily vitamin C intake. A half-cup of cooked broccoli contains abundant vitamin C, promoting a healthy immunological response.

13. May support dental and oral health

Broccoli is high in nutrients that promote oral health and prevent tooth disorders. It contains high levels of vitamin C and calcium, both related to a lower incidence of periodontitis. Kaempferol, a flavonoid present in broccoli, may help prevent periodontitis. Additionally, sulforaphane in broccoli may lower the incidence of mouth cancer. Some sources claim that eating raw broccoli will help remove plaque and whiten teeth; however, no thorough scientific evidence supports this. More research is needed to understand its significance in sustaining oral health.

14. It may promote healthy bones and joints.

Broccoli contains various elements that promote bone health and may help avoid bone problems. It contains vitamin K, calcium, phosphorus, zinc, and vitamins A and C. A test-tube study suggests that broccoli’s sulforaphane may help prevent osteoarthritis, but further research is needed to understand its significance in humans. Furthermore, a preliminary analysis indicates that some antioxidants found in broccoli may prevent joint diseases. Overall, broccoli is an excellent provider of nutrients for strong bones.

15. Nutrient-rich foods can support 15A healthy pregnancy.

During pregnancy, the body needs vitamins, minerals, and protein to nourish the baby and the mother. Broccoli is high in B vitamins, particularly folate, required to develop the embryonic brain and spine. Regular consumption of folate-rich foods can help guarantee a healthy pregnancy. According to some animal studies, the mother’s broccoli consumption may aid the newborn’s cognitive development. More research is needed to determine how broccoli and its bioactive ingredients can promote healthy pregnancy outcomes.

16. It May Protect Your Skin From Sun Damage

Skin cancer is becoming more common as ozone layers deplete and UV radiation becomes more intense. According to research, broccoli’s bioactive components may protect against UV radiation damage, which can cause skin cancer. 

Animal studies suggest that administering broccoli extract lowers tumor growth and prevalence in mice with UV radiation-induced skin cancer. Small human trials yield similar results, demonstrating that the extract has a robust preventive impact against skin damage and cancer formation following sun exposure. More research is needed to determine how broccoli’s bioactive components may protect skin from UV damage.

Dietary tips

Choose firm, dark green pieces when buying broccoli rather than limp, yellow, or wilted ones. Fresh, immature broccoli should not have a fibrous, woody, or sulfurous flavor. To avoid mildew and limpness, store broccoli unwashed in the refrigerator’s crisper drawer and wash it before eating. Broccoli is high in vitamin K but may interact with blood thinners such as warfarin. 

People should not suddenly increase their consumption of vitamin K-rich foods such as broccoli. Some people may have allergic responses to broccoli and other cruciferous vegetables; if they get hives, swelling, or difficulty breathing after eating broccoli, they should seek medical attention. The Environmental Working Group’s 2019 list of 15 “clean” vegetables includes broccoli, meaning the danger of c.v.s. and pesticides is low.

Potential downsides

Broccoli is generally well tolerated and rarely causes allergic reactions. However, it includes goitrogens, which might affect thyroid function when ingested in large quantities. Cooking broccoli can remove the enzyme that activates goitrogens, so this isn’t an issue. Furthermore, people taking warfarin should see a healthcare practitioner before increasing their broccoli intake due to its high vitamin K1 level, which may interfere with this drug. Overall, broccoli is well accepted but may adversely affect thyroid function.


Broccoli is a widely used vegetable that you can eat fresh or cooked. It is high in minerals, particularly isothiocyanates, which have several health benefits. Broccoli has fiber and other valuable components that help improve eye health, decrease cholesterol, and protect against chronic diseases. It can lower inflammation, enhance blood sugar control, strengthen immunity, and promote heart health. However, excellent health does not come from a single meal, and adding broccoli to a well-balanced diet can make achieving health goals easier.

More Resources


Leave a Reply